Seoul National University

Junghyun Ryu

Jong Gu Lee

Maenghyo Cho

Yonghee Lee

Hyeok Seung Lee

Kyu Jin Cho

Taesoon Hwang

Je Sung Koh

Provided are a sequential joint behavior sheet using photo deformation and a method of controlling folding and unfolding thereof. The sequential joint behavior sheet includes at least three rigid parts, a first joint part joining two of the rigid parts that are adjacent to each other, and a second joint part joining two of the rigid parts that are adjacent to each other and spaced apart from the first joint part. Here, the first and second joint parts have a first state in which the same rigid state as the rigid parts is maintained, and a second state in which one rigid part performs a folding behavior with respect to the other rigid part of the two adjacent rigid parts between the first and second joint parts, the second state being reached when light is absorbed, and print patterns having different degrees of transparency are formed on a transparent high-molecular-weight polymer in the first and second joint parts, and thus a folding behavior is sequentially performed at the first and second joint parts due to different times taken to reach the second state through radiation of light according to degrees of transparency of the first and second joint parts.

Sequential joint behavior sheet using photo deformation and method of controlling folding and unfolding thereof

Disclosed herein is a deformation sensing flexible substrate using a pattern formed of a conductive material. The deformation sensing flexible substrate, using the pattern formed of the conductive material, includes a flexible substrate; and conductive patterns in which conductors including a conductive material are arranged and formed to be contactable and non-contact to each other based on deformation of the flexible substrate.

Deformation sensing flexible substrate using pattern formed of conductive material

Growing community of inventors

Seoul, South Korea

Junghyun Ryu